Edward c



COMPOSITIONS, COATING OR PLASTIC.

EDWARD o. BRIOE, on WASHINGTON, DISTRICT OF COLUMBIA.

EXAM 'AWWQ'ROQ 1 ARTIFICIAL STONE.

SPECIFICATION forming part of Letters Patent no. 449,067, dated March 2 1-, 1891.

To all whom it may concern:

Be it known that I, ELWARD 0. 31mm, of. Washington, in the District of Columbia, have invented a new and useful Improvement in 5 Artificial Stone; and I do hereby declare that the following is a full, clear, and exact de scription of the same.

My invention is an improvement in the manufacture of bricks, artificial stone for use I [O in pavements, buildings, and for such other solution of commonlsalt 1n sul urlc acid.

Ks soon as the materials a50ve specified have beeg redu ed toa semi-l-i uid condition bv means 0? Eeatan "itlitlie application of 3c the fumes aaove mentioned, it is drawn oil from the furnace and thinned by the addition of warm water in the proportion of three in the process of of silex fifteen parts, by meas- Application filed January 4,1890- Serial No. 335,907. (No specimens.)

terial. I then take of finely-pulverized dry cla and of Portland cement in the proportion 5 of two ounces 0 e cemen I and five pounds six ounces of the clay and mix. these thoroughly together. This mixture of clay and cement is then stirred into' the diluted mixture of sand, lime, and sodauntil it-is of a proper consistency to mold, and the resultant mass may be rolled out into sheets or pressed into the form of tiles, building -bricks, or

blocks of any suitable shape desired, and it then sets or hardens and is ready for use. It 5 may be laid directly by rolling it in the form of sheets for sidewalks, floors, and the like without forming it into blocks.

I claim as my invention- I The hereinbefore-described mode of mak- 5o ing artificial stone, the same consisting, first, in reducing sand, lime,.and causticsoda toa liquid QQfldifJion by the application of heat and the fumesolfofmmonsalt dissolved in slllb lllll'lc ac id next, in thinning the semiliquid material by the addition of water; third, in mixing therewith clay and Portland cement, all'substantially as described.

In testimony whereof I have signed my name to this specification in the presence of 60 two subscribing witnesses.

EDWARD 'o. BRICE.

Witnesses:

HENRY E. COOPER,

, gallons of water to one of the semi-liquid ma- I.E.MIDDLETON., '7 l f v" 

